Logic Gates

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Chapter 5

Truth Table &

Basic Logic Gates

OBJECTIVES

OBJECTIVES

* Be able to identify truth tables.

* Be able to create 1-input, 2-input, … n-input truth tables.

* Be able to enumerate the different basic logic gates.

* Be able to apply truth tables in basic logic gates.

* Be able to draw boolean expressions or equations using basic logic gates.

* Be able to draw the simplified (brought about by using boolean algebra) expressions using basic logic gates.

* Be able to notice and identify the importance of simplifying circuits.

* Be able to identify truth tables.

* Be able to create 1-input, 2-input, … n-input truth tables.

* Be able to enumerate the different basic logic gates.

* Be able to apply truth tables in basic logic gates.

* Be able to draw boolean expressions or equations using basic logic gates.

* Be able to draw the simplified (brought about by using boolean algebra) expressions using basic logic gates.

* Be able to notice and identify the importance of simplifying circuits.

INTRODUCTION

After mastering and knowing the boolean algebra by heart, next step is to draw the simplified boolean expressions by using the 8 basic logic gates. And in doing so, we have to understand the underlying principles involve in the basic logic gates. We can always construed that the basic logic gates can be also called LOGICAL CONNECTORS or LOGICAL OPERATORS (that we always used in programming). And connectors are also being used in our everyday English communication. Like our teacher in English 1 would always say … “You and I will be going to the party.”, with matching intonation and diction. The sentence tells us that it’s a must that both of us attend the party. So when we are talking with our classmates, parents and/or teachers we must be aware of the connectors we are using.

TRUTH TABLE - tabular representation of all possible...